Celebrities including Justin Bieber and Will Smith show off their cube-solving skills.

WSJ: One Rubik's Cube, Many Knockoffs, Quintillions of Possibilities

Mr Rowe believes the police could bring to book the real killers and said they should show the same commitment to solving the crime that the Metropolitan Police have with the Michael Menson and Stephen Lawrence cases.

BBC: Bittersweet freedom for M25 man

On Oprah Winfrey's show last month Smith reprised his film stunt, solving the cube in two minutes.

FORBES: That 1980s puzzle fad is back. No batteries required.

Opinion polls show that big majorities of the electorate want politicians to focus on problem-solving rather than on point-scoring.

ECONOMIST: Lexington